those detox drinks aren't helping....

only the liquid that you drink on the day of the test is important... drinking prior to that is just hydrating you, nothing else. A creatine supplement would increase your creatinine levels, i'm not sure how much a roast beef sandwich is gonna do for you. It takes 2+ days for the creatine to manufacture itself into creatinine, so if your test is tomorrow - it might be too late to start.

With all the monies you have spent, it would have been easier just to sub.